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Finding the Fourth Proportional to 71,542.80, 107,279.64 and 41,970.24

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Solution

The fourth proportional to 71,542.80, 107,279.64 and 41,970.24 is: 62,935.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,542.80 : 107,279.64 = 41,970.24 : x
  2. Step 2: Convert to fraction form
    71,542.80/107,279.64 = 41,970.24/x
  3. Step 3: Cross multiply
    71,542.80x = 107,279.64 × 41,970.24
  4. Step 4: Simplify right side
    71,542.80x = 4,502,552,237.91
  5. Step 5: Solve for x
    x = 4,502,552,237.91/71,542.80
  6. Step 6: Final answer
    x = 62,935.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.